Bp 337 en
Modeling and simulations of motion of particle ensembles in force fields
Author: Jan Kohout
This thesis deals with simulation of motion of objects in controlled force ﬁelds. The main outcome is a set of Matlab functions which allow describing the ﬁelds both analytically (giving a mathematical expression for the ﬁeld) and numerically (giving a set of spatially sampled values of the ﬁeld). The functions generate trajectories of the particles. Functionality of the simulator is demonstrated for the application domain of dielectrophoretic micromanipulation wherein uncharged yet polarizable microparticles feel some force when exposed to a nonhomogeneous electric ﬁeld. The work also includes a routine for numerical approximation of the dielectrophoretic force field obviating the need to solve Laplace equation (in order to ﬁnd the electric ﬁeld intensity).